Bias : Mantel - Haehszel and the Rasch Model
نویسندگان
چکیده
ITEM BIAS: MANTEL-HAEHSZEL AND THE RASCH MODEL John M. Linacre and Benjamin D. Wright Memorandum No. 39 MESA Psychometric Laboratory Department of Education University of Chicago February 1987 The Mantel-Haenszel (MH) procedure attempts to identify and quantify differential item performance (item bias). This paper summarizes the MH statistics, and identifies the parameters they estimate . An equivalent procedure based on the Rasch model is described. The theoretical properties of the two approaches are compared and shown to require the same assumptions. The MH procedure is shown to be statistically inferior to the Rasch procedure.
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